Apparatus for deoxidizing and filtering heated water.



F. N. SPELLER. APPARATUS FOR nEoxmlzlNG AND FILTEmNG HEATED WATER. A'PPL1CATION FILED FEB. 17, 1916.

1,204,602.A 4Patented Nom-14, 1916 l ,PAGA

INVENTOR yvwnesss' y f Z HMM/MM F. N. SPELER. APPARATUSIOR DEOXIDIZINGAND FILTERING HEATED WATER.

' APPLICATION FILED FEB. 17. I9I6.

WITNESSE:. INVENTOR 06f/fw 325%@ M /7 MQW Patented Nov. 14, 19,16.

3 SHEETS-SHEET 2l F. NSPELLER. APPARATUS FOR-DEOXIDIZING AND FILTEHINGI-IEAIED'-WATER.

APPLICATION FILED FEB. I7, ISIS.

Patented Nov. 14, 1916.

3 SHELISMSHEEI 31 I I WWAMMWWMMIHIMMII I. f

INVENTOR N"UNITE sTATEs PATENT oEEIoE.

FRANK N. SPELLER, OF PITTSBURGH, PENNSYLVANIA, ASSIGNOR V'10 NATIONALTUBE COMPANY, OF PITTSBURGH, PENNSYLVANIA, A CORPORATION 0Fv NEW JERSEY.

APPARATUS FOR DEXIDIZING AND FILTERING HEATED WATER.

. Specification of Letters Patent.

Patented Nov. 14, 1916.

Application Bled February 17, 1916. -Seria1 No. 78,916.

To (1U whom it ma concern Be. it known that I. FRANK N. SPELLER,'

a citizen of the United States, and resident .of Pittsburgh. in thecounty of Allegheny aud State ot' Pennsylvania, have invented certainnew and useful Improvements in Apparatus for Deoxidizing and FilteringHeated lVater. of which the following is a specification.

My invention relates to apparatus for use in removing-'the free oxygenand other soluble corrosive matter in water, and in filtering heatedwater. and while applicable to other uses, more particularly relates tothe construction and arrangement of apparatus for heating. and fordeoxidizing and filtering the heated water supply of dwellings. hotels.public buildings, and similar localities. reqniringa constant supply ofhot water for distribution at any or all of a large number of outletsand in consequence in quantities varying frequently from zero to themaximum. It has been 4found that such hot. water plants deterioratequickly .by reason of the rapid corrosion of the apparatus and pipingleading from such apparatus on account of the large amount of treeoxygen in the water.

()ne object. of my invention is to provide. apparatus fordeoxidizlngwater, 1,; e., re-

movmg free oxygen and other soluble corrosive matter in the water, and.for filtering the heated. deoxidlzed water, and having 'novel meanswhereby the water after being bility of clogging of the passages in thedeoxidizing 'chamber of the apparatus is avoided and overcome.

A further object of the inventionA is to provide apparatus havingimproved means whereby the deoxidized water is stored and is maintainedin heated condition in contact with a large wrought metal surface of thesame tenwerature asthe Water, thereby -lncreasmg the heat recuperatingor storagel ings, forming part vot' this specification, 65

Figure l is a. sectional elevation of a vertical deoxidizing andfiltering apparatus constructed and arranged in accordance with myinvention. Fig. 2 is a'plan of the apparatus shown in Fig. l, the lowerhalf of this view being in sectionand the section being .taken on theline II-II of Fig. 1. Fig. 3 is a sectional plan of the apparatus ofFig. l, the upper half of the section being taken 'on the line III-III,the' lower right 75 hand half of the` lower half on the line Illa-JIP",and the lower left hand half of the lower half ot' Fig. 3 being a.section on the line IHF-III", of Fig. l. Fig. 4 is a detail sectionalplan, on a larger scale, show- 80 ing the arrangement of the radiallydisposed corrugated and flat rolled steel or iron plates on thedeoxidizing chamber of the apparatus of Fig. 1. Fig. 5 is a longitudinalside elevation showing a modified and preferred form of heating.deoxidizing `and filtering apparatus constructed and arranged inaccordance with my invention. Fig. 6 is a. sectional end elevation ofthedeoxidizing chamber of the apparatus of Fig. 5, the sec tion being takenon the lineVI.-VI of Fig. 5, showing one arrangement of the waterdeoxidizing plates within the deoxidizing chamber. Fig'. 7 isa sectionalend elevation similar to that of Fig. 6 showing a 95 modiication in thearrangement of the de oxidizing plates of the apparatus of Fig. 5. Fig.8 is a sectional detail in end eleva-- tion showing on a larger scalethe construction and arrangement of the deoxidizing plates of Figs. 5and 6. Fig.'9 is a sectional detail, in side elevation.. showing thearrangement of the cylindrical metal deoxidizing disks or plates of-Fig.7.

and arrangement of parts 60 BEST AvAiLAeLE In the accompanying drawings,referring now to the vertical apparatus of Figs. l to 4, the numeral 2designates the cylindricall shell of my improved apparatus whichpreferably is made of rolled 'metal plates having a flange 3 riveted orotherwise .fastened to. each end of the shell. Secured on the ends ofthe shell 2 through the medium ofthe anges 3 and fastening bolts 4 so asto be removable are top and bottom heads 5 and 6. The contacting facesof the heads 5 and (i and flanges 3 are machined so as to form a watertight joint7 a gasket of suitable niaterial being preferably used inmaking the joints tight. Secured within the'wrought met-al shell 2 is acylindrical shell 7 of smaller diameter which also is formed of rolledsteel or iron plates and riveted or otherwise fastened within the shell7 at al point' adjacent to its lower'end is aflanged wrought metal hea-d.8.'

The open ends of the shell 7 are positioned within annular recesses orgrooves 9 provided for that purpose in the heads 5 and 6, gaskets 10,10, being positioned within these recesses to form a tight Vjointbetween the ends of the shell 7 and engaging surfaces of t-he recesses 9when the heads-5 and 6 are fastened to the flanges in securing the partsin assembled position.

The shell 2, shell 7 flanged head S, andthe heads and 6, when assembled,as has been described, form an annular outer deoxidizing chamber 11, acylindrical bottom chaniber 12, and a cylindrical inner filteringchamber` 13. Extending vertically within the inner or filtering chamber11 is a pipe 14, one end oflthis pipe being screwed into the threadedopening provided for that purpose. in the flanged head 8, the pipeopening into the bottom chamberl 12. The upper end of the pipe 14 whichforms the outlet for the deoxi'dized water extends through the stuffingbox 1:3 and gland 16 formed in t-he head 5 and connects on the exteriorof the apparatus with the hot water lilies leading to the hot wateroutlets at the places of ,use for the heated water. The flanged head 8lis provided with ayplurality of screw threaded openings in each of whicha strainer 17 is secured, the deoxidized water passing from thefiltering chamber 13 through these strainers 17 into the bottom chamber12.

The lower part of the inner or ltering chamber l3vcontains a quantityoflgravel 18 and on tpp of the gravel is 'aaquantity of Sand '19. As thehead 5 is readily removed the sand and gravel used in the filteringrchamber can be easily and quicklyv renewed when found necessaryy -prdesirable;e

'ithin the annular deoxidizingdchamber 11 near thelowcr end thereof isaffseries of 20 of suitable size and which support the thin The iplates'21 and 22 within the deoxidizing chamber. Also secured onthefinner surface of the shell 2 and outer surface of the shell 7 nearthe top andbottom thereof, in the same way as the strips 23, 24, isaseries ot -sets of short metal strips 25 and 26 which extend verticallylengthwise and engage the edges of the radially extending plates 22 tosecure the oxidizing plates 21 and 22 in place in eight radially dividedsections, in this way -pron'dingggv means permitting any one section orset of Ythe eight sets or sections of deoxidizing plates to be removedwithout movement or disarrangement of the others.4 (See Fig. 3.) f

The upper end of the filtering chamber 13 is connected to the lower endof the deoxidizing chamber 11 by means of the series of four equallyspaced vertical pipes 27, elbows 28 and nipples 29 on the interior ofthe filtermg chamber, the nipples y2,9 being screwed into threadedopenings in the shell or wall 7 of the filtering chamber. 'strap 27a onthe upper endsof thepipes 27 rigidly secures the pipes in verticalposition.

As shown in Figs. 1 and 2, thedeoxidizv ing sheets 2O are corrugated andextend f ment of corrugated sheets provides a multi- 'plicity ofverticallyextendingopeniugs 20 for the passage of water through thedeoxidizing chamber and `rprovides the` lai-ge ex- 'posed .surface ofiron .necessary iny removing.y the dissolved oxygen fromsthe heatedwater while thewater travels downwardly through the deoxidizing, chamberand passes through the nipples Qualnd'rpxip s 27, into the upper end otthe filtering,chamber 13.

' llVliile yflat fsliectsf21yof thin rolled steel or ironai'eshown'between the radially extending co'rru'gats Slieets20,obviously thc l flat sheets Inay/bdoiiiitted undonly the corrugatedsheets 20fbe used without change in the operation'bt'the Aapparatusshown in Figs. .1, 2 and 3.

Positioned ahoye'ithe; upper end of the4 corrugated slieetfsQOjand fiatsheets2l is Vide aseries of holes 32 for the free passage y12,5' a'series of removabl'eplates 31 which' are made 1n sections, and areperforated to proof water from one side to the other of the oxidizingchamber 11.

plates. 'As shown the plates ,31 rest upon and are supported by -thestrips 26, :27, fastened 'on the shell 2 and shell 7.

Opening into the outer or deoxidizingchamber 11 is a curved horizontalpipe 30 by which the heated water is supplied to ythe deoxidizingchamber.

rl`he pipe 30 is connected by a coupling 30 to the nipple 30h screwedinto the water inlet opening-I in the shell 7 and this openingisconnected to one end of the water pipe. The .other-.

vthe direction of flow ot' the wateand enable a circulation 0f water tobe constantly maintained through the halter and downwardly through thedeoxidiziiig chamber' again into the heater. and preventeold waterflowing into the deoxidizing chamber.

. Asthe volume of metal plates is considerable. these plates act tostore up heat when the circulation is maintained and to transfer theheat to colder water entering the deoxidizing chambenin this 'way addingto the etliciency of the apiniratus.

The cold water supply pipe 3o isalso connected by a branch pipe 39withthe bot tom-of the chamber 12 to provide means for washing out theapparatus. a valve 10 vbeing provided to close the branch pipe 2li) whennot in use.. A discharge pipe 4l is also connected to the upper end ofthe tilt'ering chamber for use in washing out the filtering chamber 13.a valve 42 being provided to closeA the pipe when not in use, and asimilar washout pipe lil having a valve -H is provided .on the lowerendvof the dc- In the preferred construction shown in Figs, 5, G. 7. S'and 9. the apiuiratus comprises a coil' heater il. a cylindrical.lengthwise horizontal deoxidizing chamber l5. and a filtering andstorage vessel 46; Secured within therv deoxidizing clia-niber l5. is aseries of rows of corrugated plates -17 which are held in spacedposition by means ofa series ot ilat plates 4S bent mto cyhinlri -alform. the construction and relative arrangementl of these plates beingclearly shown in Fig.- 8. The corrugations provide a multiplicity ofopenings 4T through which the water passes and inpassing therethroughthe large surface oi inetalexposed acts to deoxidize the., heatedwaterand-.to remove any other soluble lcorrosive mattiwr 1n the heatedwater.

The plates 47 and 48 are of a length somewhat less than the overalllength of the deoxidizing chamber, so as to -provide an open 'space ateach end of the chamber, being held in position on the axially extendingscrew threaded rod lti'by the nuts 50, 50, the rod lt), whichlextendsthrough the deoxidizing chamber on the axis thereof, being fastened inplace by the nuts 51.

lustead vot' arranging the deoxidizing platesln the manner shown inFigs. 5 and o. and in detail in Fig. S. a series ot' punched orslottedcylindrical disks 52 may be employed which are threaded on the rod 49 intlie. mannerA shown `in Figs. T and Sl. In this cr'mstruction tongues y.3l-i are formed in punching the. series ot` openings .il in the. disksso as to not lessen the amount ot' the 'metalplate surface. which comesinto contact with the water. 'l`he tongues 52%, which ture to which thewater is heated.

In the apparatus oi' Figs. 5 to il. the cold water supply pipe .Trisconnected into one.

end of a T 545 and the branch outlet of this T is connected by* a nipple57 to the cold water inlet on the lower end ot' the heater il. steampipe 5S having a valve oil thereon also is connected into the lower endot' theheater and the outlet on the upper endot' the heater is connectedby nipples ($0, ol. and al1 elbow of.) to one end ot a'T (ill. valve.(it is provided on the discharge end ot' theV T (33 and the piping (if)extends into the filtering chamber 4b at the side thereof near the lowerend ot' the liltcr chamber and then extends upwardly within the chamberlo and through the stulling'box (Sii and gland o7 on the upper end ot'the filtering chainber and connects into a T (3S on thel water line of)leading to the hot water inlet on one end of the depxidizing chamber l5.

lThe branches on the. Ts (i3 and (i8 are connected byja pipe. Tlland avalve TL to form a liv-pass lrviwhich heated water. when found necessaryor desirable` may be. delivered directly from the heater il into theldeoxidizing chamber l5 without passing through the pipel extending intoand through the filtering chamber Jft.y

(ln the discharge end ot' the deoxidizing chamber is an outlet which isconnected by suitable piping v72 with the T 73 on the pipwill beemployed to regulate the temperaing leading to the inlet on the filter46 for the heated and deoxidized water. The T 73 on this inlet pipe hasits branch outlet connected t0 a line 74 with a valve 75 on the branchline 74 so as to provide a water out let' in reversing the direction offlow of water through the filter for use in washing the bod)y of sandand gravel maintair :d within the filter. The branch on thc T 79afi'ords means for supplying water to the bottom of the filter inwashing the filter.

A pipe. line 7G is provided to connect the discharge end of thedeoXidizing chamber 4.5 with the T 56 leading into the water inlet tothe water heater lsland a check valve 77 is inserted in this line so asto form a return line to cause the. circulation of water through ,theheater, the. pipe (i5 in the filter and the deoxidizing chamber whenheated water is not being withdrawn .from the 'iilter. 'l`he valve 8l onthe return line 76 adjacent to the T 56 provides means for washing outthe heater and deoxidizing chamber.

The filter 46 is provided with a.. storage chamber 78 in its lower endand the outlet pipe 79 thereon leads to the service lines or hotwateroutlets which are located at remote points. (Not shown); Y

A cold Water inlet b() may be provided on the lower portion of the inletend of the deoxidizing chamber 45 instead of or in addition to the eoldwater inlet 55, the ar rangement of piping otherwise'remaining the same."hen the water is supplied by the inlet S() it tra-verses thedeoxidizing chamber and passes into the heater through the circulatingpipe 76 and after passing through the heater .-'t-t again passes intoand through the deoxidizing chamber in the manner which has beendescribed.

The heater shown in Fig. 5 may bring the steam into direct contact withthe water in heating the water, a steam coil may be employed whendesired, or the. beater may be heated by gas or in any other knownmanuel'. The. filter of Fig'. 5 luovidcd with a series of strainersarranged in the manner shown in the filter of Fig. l to permit thefiltered water to pass out of the filter i '9 chamber into the bottomchamber al the lower end of the filter.

',lhe operation of my improved apparatus will be readily understood.With the apparatus of Figs. 1 to 5, the water as heated rises in theinlet pipe 33 from the. heater il and is discharged through the ends ofthe curved pipe 3l) into the upper end of the deoxidizing cli'a'mber 1labove the perforated plates 331. The heated water passes down'wardtv4through the perforations and into and through the multiplicityofvcrtical pzlissagcs 2U, formed by the corrugated plates 21 and 22, andyinto the annular open" space at the bottom of' the deoxidizing chamberl1, becoming deoxidiled by contact with the surfaces vof the corf Hgatedplates. The

water then passes f, i 1,

the deoxidizing chamber into the vert fl pipes 27 and isdischargedtherefrom infn the upperf end of the filtering chamber 13. `Te deoxidized water descends through the s. d and gravel in this chamberand is filtered thereby and passes out of the filtering` chamber `13through the strainers 17 into the bottom chamber .2 from which thedeoxidized and vis A filtered water rises through the central disfcharge pipe igt connected to the yhot water line leading.'` Lo the hotwater outlets or places of use.

Tn passing through the deoxidizing chamber 11 the heated water isbrought into contact with the exposed surfaces of rthe large .number ofcorrugated steel or wrought metal plateszl, 22, kwithin the deoxidizlngchamber, rand as these plates are rigidly secured 1n assembled relationthere is no relative displacement of the viron surfaces byV reason ofwater currents inthe water fiowmg throughthe water deoxidizing chamber.

Contact by the water with the surfaces ofy the corrugated plates inpassing through the deoxidizing chamber will remove the oxy-y gen andother soluble corrosive. matter in the heated water, and :in iv solidsin suspension in the deoxidized waterarc removed in passing through thefiltering chamber, while the arrangement ot' piping shownand describedwill cause the heated water t0 travel or constantly clrcnlatethrough thebeater, and the deoxidizing chamber during thc time intervals whenheated water is not being withdrawn from the apparatus through thedischarge pipe 14.

. In the operation of the apparatus of Figs.

5 Ito S), which is preferable on account of its simplicit)- andrelatively lower cost, the cold through the pipe 7:2 intothc filteringcham# ber and passing downwardly therethrough passes out of the filterthrough vthe discharge l There will be time intervals when water is notbeing withdrawn from the filter, and" at such times it is desirable tomaintain a constant circulation of water through the appr chamber 45through the pipe 76, into the heater -tt and'again pass from the heaterinto the deoxidizing chamber as has been described. The heated Water inpassing through the pipe 65 Within' the filtering chamber will heat thefilter so that filtered' Water of the desired high ttmperature is inreadiness to be Withdrawn at any time.

When desired thecirculation pipes G5 may be cut out and the Water isthen caused to circulate from the heater through the b vpass formed bythe pipe 70 and valve 71 into the deoxidizing chamber 45.

The advantages of my invention, which will be readily appreciated bythose skilled in the art, arise from the/improved arrangement ofdeoxidizing surfaces Within the deoxidizing chamber and from the novelcombination of heater, deoxidizing and filtering chambers. and theconnecting piping. The combination shown anddescribed provides ampledeoxidizing surfaces, and enables the heated Water to be deoxidized andall soluble corrosive matter to be removed, the heated water to bestored, and the filtered water to be maintained in heated condition inreadiness `for use When desired. The maintenance of the supply of hotdeoxidized Water` in readiness for use lessens the cost of heating theWater by providing an equipment which heats the deo'Xidized filteredwater throughout periods of time when water is not being withdrawn fromthe apparatus. The deoxidizing apparatus lengthens the life of thepipingand connections and the construction ot' the deoxidizing apparatusavoids liability of clogging and the resultant frequent repairs.

The large body of metal plates Within the deoxidizing chamber addsmaterially to'the rccuperative or heat storage capacity of the system,as the plates become heated to the same temperature as the water whenthe Water is circulated through the apparatus, and as this heat is givenup to the incoming Water should the temperature of the Water fall belowthe established maximum the Water is maintained ata' more equable.temperatureA in cases where the demand for heated Water is quitevariable.

Modifications in theconstruction and arrangement of lthe parts formingmy improved apparatus may be made Without departing from my invention asdefined in the appended claims.

I claim:

l. Apparatus for deoxidizing and filtering heated Water` comprising aheater having an inlet, afiltering chamber having an outlet, adeoxidizing chamber, piping connecting the deoxidizing chamber `With theheater and the iiteiing chamber, and a plufiltering chamber.

rality of thin rolled steel or iron plates Within'the deoxidizingchamber.'

2. Apparatusf'or deoxidizing and `filtering heated Water comprising aheater having a Water inlet, a filtering chamber having an outlet, adeoxidizing chamber, piping connecting the deoxidizing chamber with theheater and the filtering chamber, and a plurality of thin corrugatedrolled steel or iron plates relatively arranged to form a multiplicityof passages within the deoxidizing vchamber and to present a large areaof metal surface 'to contact with Water passed through said deoxidizingchamber.

3. Apparatus for deoxidizing and filtering heated Water comprising aheater having an inlet. a filtering chamber having an outlet a.ldeoxidizing chamber, piping connecting t e deoxidizing chamber with the.heater and the filtering chamber, piping connecting the deoxidizingchamber and heater to thereby maintain a circulation of Water throughthe filtering chamber, vdeoridizing chamber and heater. and a pluralityof thin rolled'steel or iron plates Within the deoxidizing chamber.

4. Apparatus for deoxidizing and filtering heated Water comprising -aheater, a deoxidizing chamber, and a filtering chamber, inlet and outletopenings therein, means connecting the outlet of said heater tothedeoxidizing chamber inlet, means connecting the outlet of saiddeoxidizing chamber' with the inlet to said filter, and means connectingthe deoxidizing chamber and heater Whereby a circulation of water ismaintained through the filtering chamber, deoxidizing chamber, andheater.

5. Apparatus for deoxidizingand filtering heated Water comprising aheater having a Water inlet, a cylindrical filtering chamber, anannulardeoxidizing chamber surrounding said filtering chamber', a plu- 4ralityof radiallyv extending corrugated rolled steel or iron plates within thedeoxidizing chamber forming a multiplicity of passages and presenting alarge area of metal surface to'contact with Water passed through thedeoxidizing chamber, means connecting the heater outlet with the top ofsaid deoxidizing chamber, means connecting the bottom of saiddeoxidizing chamber with the top of said filter chamber anda Wateroutlet connected to the lower end of said A G. Apparatus for deoxidizingand filteringl heated water, comprising a heater having an inlet, afiltering chamber having an outlet, a deoxidizing chamber, and meansvconnecting the deoxidizing chamberwith the heater and the filteringchamber whereby the Water is caused to pass from the heater through thedeoxidizing chamber into the filtering chamber.

`7. Apparatus for deoxidizing and filterheater and the filtering chamberwhereby the water is caused to pass from the heater through thedeoxidizmg chamber into the filtering chamber, and means connecting theheater, deoxidizing chamber and filtering chamber to maintain acirculation of water 10- throug'h said heater, deoxidizing chamber andii tering chamber. 1

In testimony whereof I have hereunto set my hand.

FRANK N. SPELLER. Witnesses:

CHRIS SPRING, f WM. REBEL.'

